Saint John Weather in December

In Saint John, December brings low daytime temperatures around 3°C (37°F), with nights cooling to -5°C (23°F). It is the wettest month of the year, so expect more snow/rainfall than usual.

Rainfall in Saint John in December

Given that this is the rainiest month, it's wise to carry an umbrella to stay dry during unexpected showers. The climate data from previous years indicates about 15 days of snow/rain, averaging 140 mm (5.5 in) for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Saint John in December

Expect highs of 3°C (37°F) in Saint John in December, with nights dropping to around -5°C (23°F). December is part of winter. Even daytime conditions remain cold, making layers, a warm coat, and winter accessories a good idea. With overnight lows of -5°C (23°F), temperatures fall below freezing at night. An extra thick blanket can make a real difference if your accommodation runs cold. Prepare for low temperatures this month by wearing plenty of layers. It's essential to stay warm in such cold conditions.

December in Saint John can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.